EP1060115B1 - Procede et installation destines au transport pneumatique de particules solides - Google Patents
Procede et installation destines au transport pneumatique de particules solides Download PDFInfo
- Publication number
- EP1060115B1 EP1060115B1 EP98965343A EP98965343A EP1060115B1 EP 1060115 B1 EP1060115 B1 EP 1060115B1 EP 98965343 A EP98965343 A EP 98965343A EP 98965343 A EP98965343 A EP 98965343A EP 1060115 B1 EP1060115 B1 EP 1060115B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- velocity
- transport air
- air
- pressurised
- relationship
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002245 particle Substances 0.000 title claims abstract description 16
- 239000007787 solid Substances 0.000 title claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 28
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000001419 dependent effect Effects 0.000 claims description 4
- 239000003570 air Substances 0.000 description 28
- 238000005265 energy consumption Methods 0.000 description 4
- 239000013590 bulk material Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- VREFGVBLTWBCJP-UHFFFAOYSA-N alprazolam Chemical compound C12=CC(Cl)=CC=C2N2C(C)=NN=C2CN=C1C1=CC=CC=C1 VREFGVBLTWBCJP-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
Definitions
- the invention relates to a method of transporting solid particles pneumatically, as defined in the preamble of the accompanying independent method Claims.
- the invention also relates to corresponding plant of the kind defined in the preamble of the accompanying dependent apparatus Claim.
- the transportation of solid particles, such as wood chips, for instance, through a tubular conduit with the aid of a pressurized gas flow, particularly a compressed-air flow, is well known to the art.
- the plant is dimensioned so that the source of pressurised-air will generate a specific air velocity in the conduit at a chosen maximum load on the system.
- the plant is dimensioned on the basis of the density of the bulk material (which in the case of wood chips will depend on the type of wood concerned and its moisture content), the concentration of the bulk material, and particle size distribution (chips, bark, etc.).
- the source of pressurised-air is normally referred to as a blower, i.e. a positive displacement compressor, which is operated at a constant speed.
- free air flow refers to the flow of air which an air compressor delivers at the output thereof, when the delivered air meets an absolute pressure of one atmosphere.
- EP-A1-0297463 reveals a powder spray system in which, for a given set of spray conditions, the rate at which the powder is fed to the spray gun is accurately controlled, in order to obtain high quality coatings.
- one object of the present invention is to provide a method and plant which enable the energy consumption of the system to be restricted when the system is operated with a varying material load. Another object is to provide a simple method of adjustment which enables this reduction in energy consumption to be achieved. Another object is to provide simple means by means of which the pressurised-air source can be adjusted to enable said reduction in energy consumption to be achieved.
- the pressure can be measured readily and safely in the transport conduit and is dependent on the material load. Consequently, it is not necessary to measure the varying amount of material fed into the conduit.
- a simple relationship can be established between the free flow from said pressurised-air source and the detected/sensed pressure under certain conditions, such that the velocity of the transporting air will be constant with respect to different occurring material loads.
- the free flow from said pressurised-air source is proportional to the rotary speed of a positive displacement blower used as said source.
- the rotary speed of the blower corresponds to the driving frequency of an asynchronous motor used to operate the blower. This frequency can easily be sensed. The frequency can also readily be controlled with the aid of a converter. It is also possible to establish the relationship between the frequency and control pressure, or set-point pressure, in the conduit. A control pressure can thus be calculated on the basis of the frequency sensed/detected and the frequency then adjusted to correspond to the control pressure.
- the plant includes a conduit 1 in which solid particles move in the direction of arrow 23.
- the conduit includes an infeed device 2 for the infeed of solid particles 21 to be transported in the direction of flow 23.
- a source of pressurised-air Arranged upstream of the infeed device is a source of pressurised-air which includes a blower 3, i.e. a compressor. Ambient air is allowed to enter the upstream end of the conduit 1, via a silencer 4.
- the blower 3 is a positive displacement blower and may comprise a screw compressor whose free flow is determined by the speed at which the screws rotate.
- the blower 3 is rotated by an asynchronous motor 5. Current is supplied to the motor 5 from switch gear via a frequency converter 6 which supplies the motor 5 with a frequency controlled by a control system 7.
- the control system 7 receives information from one or more pressure sensors 8 arranged in the conduit 1 to sense the pressure in said conduit, preferably in the region between the blower 3 and the material infeed device 2.
- the volume of material delivered to the system via the infeed device 2 defines a load level. In the case of the illustrated embodiment, the velocity of the air moving through the conduit system is kept constant for the different load levels that occur.
- the blower inlet pressure p1 is set for instance to 101.3 kPA (normal air pressure). Vi will keep v2 as the velocity for which the system was once designed, e.g. a velocity of 33 m/sec.
- the rotary speed of the asynchronous motor may generally vary in the range of (1.0:0.5) times its normal speed, i.e. the frequency can vary from 25-50 Hz since the switch gear normally delivers 50 Hz. The minimum frequency of 25 Hz is then determined with regard to safety against thermal fatigue and storage currents in respect of the asynchronous motor.
- An important feature of the invention is that the air velocity in the conduit can be kept constant without needing to measure the velocity directly and without needing to measure the instantaneous material load on the system.
- a control (set point) pressure By measuring the real pressure and calculating a control (set point) pressure, it is possible to calculate with the aid of a relationship the free flow that the blower 3 needs to deliver in order to sustain the velocity in the conduit 1.
- this flow can be easily controlled, by setting the asynchronous motor to a corresponding operating frequency, said control frequency being calculated on the basis of the pressure control value determined.
- the parameters Floff and d1 are used to adjust a p-f relationship which lies closer to, e.g., the "true curve" or a drift which is better from some other aspect.
- An alternative to the aforedescribed regulating method is one in which an attempt is made to detect or sense the air velocity in the conduit 1 directly and to adjust the blower to maintain this air velocity even when the material loaded via the infeed device 2 falls beneath the maximum value for which the chosen transport velocity has been selected.
- the velocity of the air in the conduit 2 can also be determined by measuring temperature changes of the air, i.e. by measuring the temperature of the air upstream and downstream of the blower.
- the drive motor of the blower is an asynchronous motor, so that the blower inlet velocity will be directly proportional to said frequency. It will be understood, however, that the pressurised-air source may have a different form.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Fertilizers (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Claims (10)
- Un procédé de transport pneumatique d'un matériau sous la forme de particules solides dans une phase diluée à travers une conduite, dans lequel un chargement de matériau variable du flux de transport est établi en amenant les particules dans ladite conduite dans une quantité variable et en dirigeant lesdites particules le long de la conduite à l'ide d'un flux d'air fourni par une source d'air comprimé située en amont de la position d'amenée du matériau, et dans lequel une vitesse de l'air de transport est choisie pour une charge de matériau maximum sur le flux d'air, comprenant les étapes suivantes consistant à :établir pour la vitesse de l'air de transport sélectionnée une relation qui est principalement indépendante de la charge de matériau en tant que facteur explicite, entre d'une part le flux libre de ladite source d'air comprimé et d'autre part la vitesse du flux d'air de transport, ou un état du flux d'air de transport correspondant à cela ;détecter la vitesse du flux d'air de transport ou un état du flux d'air de transport correspondant à cela ;détecter le flux libre de la source d'air comprimé soit directement ou indirectement ;calculer une valeur de contrôle par rapport à la vitesse de l'air de transport ou par rapport à l'état du flux d'air de transport correspondant à cela, à l'aide de ladite relation ; etajuster le flux d'air libre provenant de la source d'air comprimé de manière à apporter la valeur réelle de la vitesse dudit flux d'air de transport ou dudit état détecté en alignement avec la valeur de contrôle, de manière à établir une vitesse d'air de transport utilisable qui est au plus sensiblement égale à la vitesse d'air de transport choisie pour la charge de matériau maximum, même dans le cas où les charges de matériaux sont inférieures à la charge de matériau choisie.
- Un procédé selon la revendication 1, caractérisé par l'ajustement du flux libre de la source d'air de transport de manière à apporter la valeur de la vitesse dudit flux d'air de transport ou ledit état détecté en alignement avec la valeur de contrôle, de manière à établir une vitesse d'air de transport qui soit essentiellement égale à la vitesse d'air de transport choisie pour la charge de matériau maximum, même dans les cas où les charges de matériau sont inférieures à la charge maximum choisie.
- Procédé selon la revendication 1 ou 2, caractérisé par l'établissement de la relation qui est principalement indépendante de la charge de matériau en tant que facteur explicite pour la vitesse d'air de transport choisie et en tant que relation entre le flux libre de la source d'air de transport et la pression dudit flux d'air de transport ; et la détection de la pression dans la conduite d'air de transport.
- Procédé selon la revendication 3, dans lequel la source d'air comprimé comprend un compresseur rotatif (3), dans lequel le compresseur comprend un élément de pompe rotatif, et dans lequel le flux libre de la source d'air comprimé est régulé en régulant la vitesse de rotation du compresseur, qui aspire l'air à la pression ambiante.
- Procédé selon la revendication 4, caractérisé par l'entraínement de l'élément de pompe rotatif du compresseur à l'aide d'un moteur asynchrone (5) dont la vitesse dépend de la fréquence du courant d'alimentation vers le moteur ; et la régulation de la fréquence de manière à réguler le flux libre de la source d'air comprimé; et l'établissement de la relation entre la pression de contrôle et la fréquence.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé par la correction de la relation sur la base d'une lecture de courbes de pompe pour le compresseur concerné.
- Procédé selon la revendication 6, caractérisé également par la correction de ladite relation par rapport à des températures de flux d'air en amont et en aval du compresseur.
- Installation pour le transport pneumatique de matériau sous la forme de particules solides dans une phase diluée à travers une conduite (1), ladite conduite comprenant un dispositif d'amenée de matériau (2), et une source d'air comprimé (3) en amont dudit dispositif d'amenée (2), comprenant :des moyens destinés à établir sur la base d'une vitesse d'air de transport choisie (v2) pour une charge de matériau maximum choisie sur le système une relation entre le flux libre de la source d'air de transport et la vitesse du flux d'air de transport ou un état du flux d'air de transport correspondant à cela, ladite relation étant principalement indépendante de la charge de matériau en tant que facteur explicite ;des moyens (8, 6) destinés à détecter le flux d'air de transport par rapport à la vitesse ou par rapport audit état ;des moyens destinés à détecter le flux libre de la source d'air comprimé soit directement ou indirectement ;des moyens destinés à calculer à l'aide de ladite relation une valeur de contrôle pour la vitesse d'air de transport ou ledit état dudit flux d'air de transport correspondant au flux libre de la source d'air comprimé ; etdes moyens destinés à ajuster le flux libre de la source d'air de transport de manière à porter la valeur réelle de la vitesse dudit air de transport ou dudit état détecté à ladite valeur de contrôle et de ce fait établir une vitesse d'air de transport utilisable qui soit au plus globalement égale à la vitesse d'air de transport choisie pour la charge de matériau maximum, même lorsque les charges de matériau sont inférieures à la charge de matériau maximum choisie.
- Installation selon la revendication 8, caractérisée en ce que la source d'air comprimé comprend un compresseur rotatif (3) et un arbre de commande rotatif, avec lequel le flux libre fourni par ledit compresseur varie de manière linéaire avec la vitesse de rotation ; en ce que les moyens de détection sont prévus pour capter la pression d'air de transport ; et en ce que la relation est établie entre la vitesse de rotation du compresseur et la pression captée.
- Installation selon la revendication 9, caractérisée en ce que le compresseur est entraíné par un moteur asynchrone dont la vitesse varie de manière linéaire avec la fréquence du courant d'alimentation du moteur ; en ce qu'un convertisseur de fréquence est raccordé entre le moteur asynchrone et sa source d'alimentation ; et en ce que le convertisseur de fréquence (6) est commandé par des moyens de commande (7) sur la base de la pression captée, et avec lesquels la relation est établie entre la fréquence et la pression, et avec lesquels le flux libre de la source d'air comprimé correspond à la fréquence générée par le convertisseur de fréquence.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9800033 | 1998-01-09 | ||
SE9800033A SE9800033L (sv) | 1998-01-09 | 1998-01-09 | Förfarande och anläggning för pneumatisk transport av fasta partiklar |
PCT/SE1998/002424 WO1999037565A1 (fr) | 1998-01-09 | 1998-12-22 | Procede et installation destines au transport pneumatique de particules solides |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1060115A1 EP1060115A1 (fr) | 2000-12-20 |
EP1060115B1 true EP1060115B1 (fr) | 2003-04-16 |
Family
ID=20409822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98965343A Expired - Lifetime EP1060115B1 (fr) | 1998-01-09 | 1998-12-22 | Procede et installation destines au transport pneumatique de particules solides |
Country Status (10)
Country | Link |
---|---|
US (1) | US6447215B1 (fr) |
EP (1) | EP1060115B1 (fr) |
JP (1) | JP4206483B2 (fr) |
AT (1) | ATE237546T1 (fr) |
AU (1) | AU2081899A (fr) |
CA (1) | CA2318404C (fr) |
DE (1) | DE69813628T2 (fr) |
ES (1) | ES2197523T3 (fr) |
SE (1) | SE9800033L (fr) |
WO (1) | WO1999037565A1 (fr) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19943504C5 (de) * | 1999-09-10 | 2005-10-13 | Coperion Waeschle Gmbh & Co. Kg | Verfahren und Vorrichtung zur pneumatischen Förderung von Schüttgut |
JP4244145B2 (ja) * | 2002-03-27 | 2009-03-25 | 株式会社日清製粉グループ本社 | 粉粒体搬送システム |
US6827528B1 (en) * | 2003-12-27 | 2004-12-07 | Arkadi Relin | Method of dynamic transporting of object with flow of carrying medium |
US7278804B2 (en) * | 2005-10-07 | 2007-10-09 | Hi-Plains Trading Company | Methods and systems for delivering lost circulation material into drilling pits |
JP2007220557A (ja) * | 2006-02-17 | 2007-08-30 | Tyco Electronics Amp Kk | 電気コネクタ組立体 |
ITVR20070083A1 (it) * | 2007-06-12 | 2008-12-13 | Moretto Spa | Impianto per il trasporto pneumatico a velocita' controllata di materiale granulare e procedimento di controllo della velocita' di convogliamento |
US8573896B2 (en) * | 2007-10-17 | 2013-11-05 | Remco International, Inc. | Method of dynamic energy-saving superconductive transporting of medium flow |
EP2254818A1 (fr) * | 2008-01-28 | 2010-12-01 | Johann Haberl | Système de conduit tubulaire, son procédé de commande et d'utilisation |
WO2010053485A1 (fr) * | 2008-11-06 | 2010-05-14 | Crg Logics, Inc. | Système de transport pneumatique avec reprise de vitesse constante |
AT508720B1 (de) * | 2009-08-20 | 2012-05-15 | Wittmann Kunststoffgeraete | Verfahren zur automatischen beladung einer förderleitung mit schüttgut |
CN103476511B (zh) * | 2011-04-15 | 2016-11-09 | 赖茵豪森机械制造公司 | 用于从粉末供应源运送粉末的装置及方法 |
NL1039764C2 (en) * | 2012-08-17 | 2014-02-18 | J O A Technology Beheer B V | A method of, a control system, a device, a sensor and a computer program product for controlling transport of fibrous material in a transport line of a pneumatic conveying system. |
US9745148B2 (en) * | 2013-04-03 | 2017-08-29 | Gema Switzerland Gmbh | Powder conveyor and associated operating method |
DE102013211550A1 (de) * | 2013-06-19 | 2014-12-24 | Gema Switzerland Gmbh | Pulverfördervorrichtung insbesondere für Beschichtungspulver |
MX2016007831A (es) * | 2014-01-16 | 2016-12-09 | Halliburton Energy Services Inc | Apuntalante de administracion a presion para mezcladora de fracturacion costa afuera. |
US10138075B2 (en) * | 2016-10-06 | 2018-11-27 | Stephen B. Maguire | Tower configuration gravimetric blender |
US10144598B2 (en) | 2014-02-20 | 2018-12-04 | Novatec, Inc. | Variable frequency drive combined with flow limiter set for limiting flow to selected level above design choice |
US10175701B2 (en) | 2014-02-20 | 2019-01-08 | Stephen B. Maguire | Air flow regulator with detector and method for regulating air flow |
US10179708B2 (en) | 2014-02-20 | 2019-01-15 | Maguire Products, Inc. | Granular material delivery system with air flow limiter |
US20160185537A1 (en) * | 2014-02-20 | 2016-06-30 | Novatec, Inc. | Resin delivery method and apparatus using multiple sensors for optimal vacuum pump operation |
US10414083B2 (en) | 2014-02-20 | 2019-09-17 | Novatec, Inc. | Multiple sensor resin delivery optimizing vacuum pump operation |
US9937651B2 (en) | 2014-02-20 | 2018-04-10 | Novatec, Inc. | Resin delivery apparatus and method with plural air flow limiters |
US10280015B2 (en) | 2014-02-20 | 2019-05-07 | Stephen B. Maguire | Method for adjustably restricting air flow and apparatus therefor |
LU92534B1 (en) * | 2014-09-03 | 2016-03-04 | Wurth Paul Sa | Enhanced pressurising of bulk material in lock hoppers |
US10131506B2 (en) | 2014-12-09 | 2018-11-20 | Maguire Products, Inc. | Selective matrix conveyance apparatus and methods for granular resin material |
US10179696B2 (en) | 2015-01-27 | 2019-01-15 | Novatec, Inc. | Variable opening slide gate for regulating material flow into airstream |
EP3256383A4 (fr) * | 2015-02-12 | 2018-10-03 | IPEG, Inc. | Commande actionnée par le vide automatisée |
US10138076B2 (en) * | 2015-02-25 | 2018-11-27 | Stephen B. Maguire | Method for resin delivery including metering introduction of external air to maintain desired vacuum level |
US9745149B2 (en) * | 2015-03-19 | 2017-08-29 | Ipeg, Inc. | Material delivery system |
EP3100968A1 (fr) * | 2015-06-01 | 2016-12-07 | Xerex Ab | Dispositif et système de transport pneumatique d'un matériau |
LU92813B1 (en) * | 2015-09-02 | 2017-03-20 | Wurth Paul Sa | Enhanced pressurising of bulk material in lock hoppers |
US9776335B2 (en) * | 2015-09-08 | 2017-10-03 | Southern Field Welding, Llc | Water flow control assembly for hydraulic food cutter |
US10246274B2 (en) * | 2015-11-04 | 2019-04-02 | Cnh Industrial Canada, Ltd. | Systems and methods for air cart pressurization monitoring |
FI127098B (fi) * | 2016-01-07 | 2017-11-15 | Maricap Oy | Menetelmä, laitteisto ja järjestelmä jätemateriaalin käsittelemiseksi |
US10494200B2 (en) * | 2016-04-25 | 2019-12-03 | Chevron Phillips Chemical Company Lp | Measurement of product pellets flow rate |
US11358785B2 (en) * | 2018-04-04 | 2022-06-14 | Superior Bulk, Inc. | Silo system and bulk material management system |
US12045764B2 (en) | 2018-04-04 | 2024-07-23 | Superior Bulk, Inc. | Automated dispatch and delivery confirmation |
EP3730445B1 (fr) * | 2019-04-23 | 2022-03-23 | KONE Corporation | Procédé et dispositif de transport de passagers |
JP7365575B2 (ja) * | 2019-08-09 | 2023-10-20 | 三菱マテリアル株式会社 | 鉱石連続供給装置 |
JP2023097945A (ja) * | 2021-12-28 | 2023-07-10 | 三菱重工業株式会社 | 制御装置、粉粒体供給システム、制御方法およびプログラム |
US12022762B2 (en) * | 2021-12-29 | 2024-07-02 | Cnh Industrial Canada, Ltd. | System and method for controlling fan operation of an agricultural implement |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2319028A1 (de) | 1972-04-14 | 1973-11-08 | Burton On Trent Engineering Lt | Zuteilgeraet fuer schuettgut, insbesondere pelletisierten hopfen |
DE2334360B2 (de) | 1973-07-06 | 1977-04-07 | Waeschle Maschinenfabrik Gmbh, 7980 Ravensburg | Verfahren und einrichtung zum pneumatischen foerdern von feinpulverigen, zum ansetzen an die rohrwand neigenden produkten |
US4009912A (en) * | 1974-11-04 | 1977-03-01 | Joseph Mraz | Pneumatic conveying apparatus and method |
US3979152A (en) | 1974-11-22 | 1976-09-07 | Morbark Industries, Inc. | Particulate material handling apparatus |
JPS5593734A (en) * | 1978-12-29 | 1980-07-16 | Gen Resource Corp | Method and device for carrying corpuscular substance through pipeeline |
GB2089307B (en) | 1980-11-26 | 1985-01-03 | Texaide Ltd | Apparatus for conveying a fluid and/or a fluid borne material including a translucent pipe and associated light source |
US4502819A (en) * | 1981-06-12 | 1985-03-05 | Denka Engineering Kabushiki Kaisha | Constant discharge device in a conveyor for powdery and granular materials |
SE458924B (sv) * | 1985-01-28 | 1989-05-22 | Abb Stal Ab | Transportanordning foer pneumatisk transport med tryckreduceringsorgan innefattande strypning |
US4662799A (en) * | 1985-05-17 | 1987-05-05 | Fuller Company | Apparatus and process for pneumatically conveying particulate material |
US5092526A (en) * | 1989-02-24 | 1992-03-03 | Ag-Chem Equipment Co., Inc. | Venturi system for agricultural spreaders of solid particles |
US4938637A (en) * | 1989-06-09 | 1990-07-03 | Lybecker G Wayne | Method and apparatus for bottom loading a pneumatic transport pressure vessel |
EP0427881A1 (fr) | 1989-11-13 | 1991-05-22 | Fritz Werner Industrie-Ausrüstungen GmbH | Procédé et dispositif pour réglage de débit volumétrique d'une installation de transport par l'aspiration d'air |
US5247722A (en) * | 1990-02-22 | 1993-09-28 | Trutzschler Gmbh & Co. Kg | Method and apparatus for pneumatically introducing fiber to a fiber processing machine |
US5201877A (en) * | 1992-04-24 | 1993-04-13 | Arkadi Relin | Suction transporting device |
EP0653366B1 (fr) * | 1993-11-15 | 1998-04-01 | ZEPPELIN SCHÜTTGUTTECHNIK GmbH | Procédé et dispositif pour nettoyer des tuyauteries de transport par soufflage |
SE506007C2 (sv) * | 1993-12-20 | 1997-11-03 | Evac Ab | Vakuumavloppssystem med ejektor |
US5618136A (en) | 1995-08-04 | 1997-04-08 | Smoot Co. | Dual blower railcar discharge and conveyor system and method |
DE19622191A1 (de) * | 1996-06-03 | 1997-12-04 | Bayer Ag | Verfahren und Vorrichtung zum kontaminationsfreien Dosieren und Fördern von zu dispergierenden bzw. zu lösenden Feststoffpulvern |
-
1998
- 1998-01-09 SE SE9800033A patent/SE9800033L/ not_active IP Right Cessation
- 1998-12-22 AU AU20818/99A patent/AU2081899A/en not_active Abandoned
- 1998-12-22 DE DE69813628T patent/DE69813628T2/de not_active Expired - Lifetime
- 1998-12-22 AT AT98965343T patent/ATE237546T1/de active
- 1998-12-22 ES ES98965343T patent/ES2197523T3/es not_active Expired - Lifetime
- 1998-12-22 WO PCT/SE1998/002424 patent/WO1999037565A1/fr active IP Right Grant
- 1998-12-22 CA CA002318404A patent/CA2318404C/fr not_active Expired - Fee Related
- 1998-12-22 US US09/581,540 patent/US6447215B1/en not_active Expired - Fee Related
- 1998-12-22 JP JP2000528499A patent/JP4206483B2/ja not_active Expired - Fee Related
- 1998-12-22 EP EP98965343A patent/EP1060115B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1999037565A1 (fr) | 1999-07-29 |
ES2197523T3 (es) | 2004-01-01 |
ATE237546T1 (de) | 2003-05-15 |
SE510507C2 (sv) | 1999-05-31 |
CA2318404C (fr) | 2007-02-13 |
SE9800033D0 (sv) | 1998-01-09 |
SE9800033L (sv) | 1999-05-31 |
EP1060115A1 (fr) | 2000-12-20 |
JP4206483B2 (ja) | 2009-01-14 |
DE69813628D1 (de) | 2003-05-22 |
DE69813628T2 (de) | 2004-02-26 |
JP2002500997A (ja) | 2002-01-15 |
CA2318404A1 (fr) | 1999-07-29 |
AU2081899A (en) | 1999-08-09 |
US6447215B1 (en) | 2002-09-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1060115B1 (fr) | Procede et installation destines au transport pneumatique de particules solides | |
US4867127A (en) | Arrangement for regulating the combustion air proportions | |
US7036319B2 (en) | Method of balancing the supply of bleed air from a plurality of engines | |
US4402462A (en) | Process for controlling a grinding installation | |
US4170073A (en) | Wide dynamic range multi-zone drying method and apparatus for controlling product moisture | |
GB2106668A (en) | Method and apparatus for controlling a pneumatic feed system | |
EP0060137A1 (fr) | Systèmes de transport | |
US5277134A (en) | Coal mill control process | |
JPS62113891A (ja) | タ−ボ圧縮機の調整方法及び装置 | |
KR101197404B1 (ko) | 버너 시스템용 유동성 재료를 연속적으로 중량 계량하는 방법 및 그 장치 | |
JP2742001B2 (ja) | 微粉炭吹込み制御方法 | |
JP2004035913A (ja) | 粉粒体吹込み制御方法及び装置 | |
US6435039B1 (en) | Method and device for continuous gravimetric assaying | |
CA2309635C (fr) | Dispositif et procede de dosage continu | |
JP3404614B2 (ja) | 粉粒体の供給量制御方法 | |
JPH048337B2 (fr) | ||
CA2228007A1 (fr) | Procede de detection automatique d'un fonctionnement en limite de stabilite d'une installation de transport pneumatique d'un produit en vrac en phase dense | |
JP2661838B2 (ja) | スクリューフィーダ式定量切り出し装置 | |
JP2998234B2 (ja) | ミルの出炭量計測装置 | |
SU908701A1 (ru) | Способ управлени загрузкой ленточного конвейера | |
SU1452582A1 (ru) | Система автоматического управлени процессом измельчени и сушки материала в помольном агрегате | |
EP0185890B1 (fr) | Procédé pour le transport de matières en vrac en quantité contrôlée | |
US11713718B2 (en) | Dual valve fluid metering system | |
SU926474A1 (ru) | Способ автоматического регулировани процесса сушки сыпучих материалов | |
SU1486184A1 (ru) | Система автоматического регулирования производительности вентилируемой мельницы |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20000621 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: INDUSTRIMONTERING MEKAN AB |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WELLMAR, PAER |
|
17Q | First examination report despatched |
Effective date: 20010921 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FASTIGHETSBOLAGET AXELN 5 AB |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030416 Ref country code: LI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030416 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20030416 Ref country code: CH Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030416 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030416 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69813628 Country of ref document: DE Date of ref document: 20030522 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030716 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030716 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030716 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030716 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031222 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031231 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2197523 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20040119 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20101223 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20101229 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20111223 Year of fee payment: 14 Ref country code: ES Payment date: 20111221 Year of fee payment: 14 Ref country code: FI Payment date: 20111215 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20120118 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20111227 Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 237546 Country of ref document: AT Kind code of ref document: T Effective date: 20121222 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20121222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121222 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20130830 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69813628 Country of ref document: DE Effective date: 20130702 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130702 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121222 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121222 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130102 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20140307 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20121223 |